{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Increased protein sorption in poly ( acrylic acid ) - containing films through incorporation of comb - like polymers and film adsorption at low pH and high ionic strength ."}
{"Chemical": ["poly ( acrylic acid )"]}